Abstract
The 11Be nucleus is investigated in the Generator Coordinate Method, using 10Be+n microscopic wave functions. The 10Be wave functions are defined in the harmonic oscillator model with all p-shell configurations. The model confirms the halo structure of the 11Be ground state, and of its 1 2 − first excited state. The former is suggested to have a dominant 10Be(g.s.)+n component, and the latter a dominant 10Be(2 +)+n structure. We compute neutron and proton densities in both states, and the corresponding r.m.s. radii. Properties of unbound states are discussed. The theoretical photo-absorption cross section of 11Be presents a strong peak at low energies, which is interpreted as its soft dipole mode. The same model is applied to the mirror 11N nucleus, whose ground state is particle unstable.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
